Custom Precision Aluminum CNC Lathe Turned Bushings
We manufacture custom aluminum CNC turned bushings strictly according to your 2D engineering drawings, 3D CAD files, or approved physical samples. Every bushing can be fully customized around your assembly requirements, including internal diameter, outside diameter, overall length, flange dimensions, grooves, threads, chamfers, and other rotational or milled features.
Designed Around Your Shaft, Housing, and Assembly Requirements
Internal Diameter: Precision-machined for shaft, pin, or bearing fits (clearance, sliding, or interference fits).
Outside Diameter: Sized for precise housing or mounting bore installation.
Overall Length & Flange: Exact axial positioning, flange thickness, and shoulder location to avoid stack-up errors.
Wall Thickness & Grooves: Uniform wall thickness with optional internal or external lubrication and retention grooves.
Threads & Chamfers: Precision metric or imperial threads and customized lead-in chamfers for easy assembly.
Concentricity & Runout: Maintained across common axes to ensure high rotational balance and prevent vibration.
Surface Finish: Controlled surface roughness on mating areas to minimize friction and wear.
Material Selection and International Standards
6061-T6 Aluminum (UNS A96061 / ISO AlMg1SiCu)
6061-T6 is the industry standard for general-purpose machined aluminum parts. It offers an excellent balance of machinability, structural strength, corrosion resistance, and light weight.
Best for: Automation equipment, general mechanical assemblies, fixtures, tooling, mounting components, and spacers.
7075-T6 Aluminum (UNS A97075 / ISO AlZn5.5MgCu)
7075-T6 delivers high mechanical strength comparable to many steel alloys while retaining the lightweight advantage of aluminum.
Best for: High-stress mechanical assemblies, lightweight high-performance equipment, robotics, and aerospace-related components.
Precision CNC Turning and Fit Control
Manufacturing Capabilities
- Primary Turning: Facing, OD turning, internal boring, drilling, reaming, grooving, threading, chamfering, and parting off.
- Secondary Operations: Cross-hole drilling, keyway cutting, side flats, and secondary slot milling.
Dynamic Fit and Tolerance Control
- Bore Fit (ID): Precision-bored to maintain exact sliding, running, or press-fit tolerances relative to your pin or shaft.
- Housing Fit (OD): Sized to prevent housing distortion or loose seating during press-fit or drop-in installation.
- Concentricity and Total Indicated Runout (TIR): Single-setup or precision-indexed machining ensures tight concentricity between ID and OD, preventing alignment issues in rotating machinery.
Technical Specifications
|
Feature |
Specification |
|
Product Name |
Custom Precision Aluminum CNC Lathe Turned Bushing |
|
Available Materials |
6061-T6, 7075-T6, 2024, 6082, and other specified aluminum alloys |
|
Material Standards |
UNS A96061 / ISO AlMg1SiCu (6061), UNS A97075 / ISO AlZn5.5MgCu (7075) |
|
Machining Capabilities |
CNC Turning, Boring, Reaming, Threading, Grooving, Secondary Milling |
|
Bushing Types |
Sleeve, Flanged, Stepped, Shoulder, Threaded, Spacer, Grooved, Custom |
|
Precision Tolerances |
Down to +/- 0.005 mm (+/- 0.0002 in) on critical features upon request |
|
Surface Roughness |
Standard Ra 1.6 um (63 uin); fine-turned down to Ra 0.8 um (32 uin) |
|
Surface Finish Options |
As-machined, Clear Anodized, Black Anodized, Color Anodized, Hardcoat (Type III) |
|
Thread Standards |
Metric, UNC, UNF, NPT, or drawing-specific custom threads |
|
Production Scale |
Rapid prototyping, small-batch runs, and high-volume production |
Surface Finishing and Dimensioning Rules
As-Machined Finish: Clean, burr-free surface ready for immediate assembly.
Anodizing Options: Clear, black, or custom color Type II anodizing, or Type III hardcoat anodizing for extreme wear resistance.
Comprehensive Quality Control
Dimensions Verified
ID, OD, overall length, flange thickness, thread pitch, chamfers, and groove locations.
Form & Runout Inspection
Concentricity, cylindricity, and Total Indicated Runout (TIR).
Inspection Equipment
Bore micrometers, pin gauges, optical comparators, thread gauges, digital height gauges, surface roughness testers, and CMM equipment.
Real Manufacturing Evidence
CNC Turning Process: Aluminum bar stock being machined on a CNC lathe.
Bore Inspection: Quality technician measuring the internal bore using a bore gauge or micrometer.
OD & Runout Check: Precision measurement of outside diameter and concentricity.
Finished & Anodized Parts: Side-by-side comparison of as-machined versus anodized finish options.
Protective Packaging: Custom tray or individual protective packaging designed to prevent scratch damage during transit.
FAQ
Q: What aluminum grades are commonly used for CNC turned bushings?
A: 6061-T6 is commonly used for general-purpose machined aluminum components because it provides a practical balance of machinability, strength, corrosion resistance, and weight. 7075-T6 can be considered when higher strength is required. Other grades can be used when specified by the engineering requirement.
Q: Can a custom aluminum bushing be manufactured from my drawing?
A: Yes. Custom bushings can be manufactured from 2D engineering drawings, 3D CAD files, or approved samples. The drawing should identify material, dimensions, tolerances, threads, surface treatment, and other functional requirements.
Q: How should I specify the fit between the bushing and shaft?
A: The required fit depends on the shaft diameter, housing condition, assembly method, operating environment, and whether the bushing needs to slide, rotate, or remain fixed.
Q: Can you manufacture flanged and stepped aluminum bushings?
A: Yes. CNC turning can produce sleeve, flanged, stepped, shoulder, grooved, threaded, and other rotational bushing designs. Secondary machining can be added where the design contains non-rotational features.
Q: Can aluminum CNC bushings be anodized?
A: Yes, when anodizing is required and suitable for the application. Clear, black, colored, and hard anodized finishes may be specified. Critical mating dimensions should be reviewed together with the anodizing requirement because the finishing process can affect the final dimension.
Q: Which bushing dimensions should be treated as critical?
A: The internal diameter, outside diameter, overall length, flange position, shoulder location, and concentricity or runout should be identified when they directly affect assembly performance.
Q: Can prototype bushings be made before production quantities?
A: Prototype and small-batch production can be used to verify dimensional fit, material, geometry, and surface finish before moving into repeat production.
Q: What information is needed for a quotation?
A: A 2D drawing or 3D CAD file is the best starting point. Material, ID, OD, length, tolerances, surface treatment, quantity, thread requirements, inspection requirements, and packaging requirements should also be provided where applicable.
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